From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wayne Schroeder <raz@positivenetworks.net>
Subject: What basic sanity checking on packet headers is done
Date: Fri, 29 Sep 2006 11:20:53 -0500
Message-ID: <451D47E5.7000108@positivenetworks.net>
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I've written a new target module that uses the ip header fields of ihl
and tot_len for offsets into the packets.  How safe is the data in the
ip headers?  Is there sanity checking when the packet is received off
the wire... for instance -- is it safe to assume in the prerouting chain
of the mangle table that tot_len will not put me past the memory
allocated for the packet?  Same goes for ihl?

Wayne